Adjustable span standard on 10’-16’ spans through 5 ton. Bolted connections on spans of 20’-24’ and all 8 ton units. Heavy duty supported leg design. Balanced designed allows for easy maneuvering, even under load. Simple bolted construction. Easy set up and maintenance. 4-steel swivel casters standard. Height & span adjustability. The height is adjustable down from maximum in 12" increments. Conforms to AISC, OSHA and CMAA specifications.